Added value of a single-energy projection-based metal-artifact reduction algorithm for the computed tomography evaluation of oral cavity cancers

Abstract

The SEMAR significantly improved the oral cavity cancer visualization and diagnostic confidence.

CT venography after knee replacement surgery: comparison of dual-energy CT-based monochromatic imaging and single-energy metal artifact reduction techniques on a 320-row CT scanner

“…The dedicated metal artifact reduction technique, the single-energy metal artifact reduction (SEMAR, Toshiba Medical Systems) algorithm, was also introduced on 320-row CT scanners and studies showed that its application significantly reduced artifacts due to various metallic objects (e.g. dental metals (15,16), metallic coils (17) and hip prostheses (18)).…”

Metal artefact reduction for patients with metallic dental fillings in helical neck computed tomography: comparison of adaptive iterative dose reduction 3D (AIDR 3D), forward-projected model-based iterative reconstruction solution (FIRST) and AIDR 3D with single-energy metal artefact reduction (SEMAR)

“…11 Metal artefact was reported to be reduced in neck CT with SEMAR. 15,16 However, these reports on SEMAR evaluated images reconstructed from volume scan data. 15,16 Because a 16-cm range of z-axis can be covered with a single volume scan using 320-detector row CT, clinical applicability of a volume scan has been limited.…”

“…Virtual monochromatic image with a high keV, which is derived from dual-energy CT, is reported to be helpful in reducing metal artefacts; however, dual-energy CT requires a specific CT scanner and scanning protocol. 9,10 At the reconstruction step, 11 metal-implanting methods [12][13][14][15][16] or iterative reconstruction algorithms 17,18 are available to reduce metal artefacts. Single-energy metal artefact reduction (SEMAR) for helical scan data is a metal-implanting method and the forward-projected model-based iterative reconstruction solution (FIRST) is a full iterative reconstruction algorithm, and both have become available recently.…”

Multiparametric Evaluation of Head and Neck Squamous Cell Carcinoma Using a Single-Source Dual-Energy CT with Fast kVp Switching: State of the Art

“…Nonetheless, so far the evidence shows that high energy DECT VMIs are promising and have the potential for improving lesion assessment in areas obscured by artifact, such as the oral cavity. Further refinements in applications of DECT for artifact reduction, and how they compare to other methods that are being developed using SECT [ 60 , 63 ], are an interesting topic for future research.…”